81255664

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4621}}^1$

素因数の和:4793

約数の個数: 40

約数和(自身を含む): 181108448

約数和(自身を除く): 99852784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1256, 2198, 2512, 4396, 4621, 8792, 9242, 17584, 18484, 32347, 36968, 64694, 73936, 129388, 258776, 517552, 725497, 1450994, 2901988, 5078479, 5803976, 10156958, 11607952, 20313916, 40627832, 81255664]

約数ペア:

[(1, 81255664), (2, 40627832), (4, 20313916), (7, 11607952), (8, 10156958), (14, 5803976), (16, 5078479), (28, 2901988), (56, 1450994), (112, 725497), (157, 517552), (314, 258776), (628, 129388), (1099, 73936), (1256, 64694), (2198, 36968), (2512, 32347), (4396, 18484), (4621, 17584), (8792, 9242)]